12636737845 has 4 divisors (see below), whose sum is σ = 15164085420. Its totient is φ = 10109390272.

The previous prime is 12636737831. The next prime is 12636737851. The reversal of 12636737845 is 54873763621.

12636737845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7004685636 + 5632052209 = 83694^2 + 75047^2 .

It is a cyclic number.

It is not a de Polignac number, because 12636737845 - 2²⁵ = 12603183413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12636737792 and 12636737801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263673780 + ... + 1263673789.

It is an arithmetic number, because the mean of its divisors is an integer number (3791021355).

Almost surely, 2^12636737845 is an apocalyptic number.

It is an amenable number.

12636737845 is a deficient number, since it is larger than the sum of its proper divisors (2527347575).

12636737845 is an equidigital number, since it uses as much as digits as its factorization.

12636737845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527347574.

The product of its digits is 5080320, while the sum is 52.

The spelling of 12636737845 in words is "twelve billion, six hundred thirty-six million, seven hundred thirty-seven thousand, eight hundred forty-five".